<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>Chat Example Using MQTT Over WebSockets</title>
  <!--[if lt IE 9]>
  <script src="js/html5shiv.min.js"></script>
  <![endif]-->
  <link href="css/bootstrap.min.css" rel="stylesheet">
  <link href="css/bootstrap.min.responsive.css" rel="stylesheet">
  <style type="text/css">
    body {
      padding-top: 40px;
    }
  </style>
</head>

<body>

<div class="navbar navbar-fixed-top">
  <div class="navbar-inner">
    <div class="container">
      <a class="brand" href="#">Apollo MQTT WebSocket Chat Example</a>
    </div>
  </div>
</div>

<div class="container-fluid">
  <div class="row-fluid">
    <div class="span6">
      <div id="connect">
        <div class="page-header">
          <h2>Server Login</h2>
        </div>
        <form class="form-horizontal" id='connect_form'>
          <fieldset>
            <div class="control-group">
              <label>Host</label>
              <div class="controls">
                <input name=host id='connect_host' value='localhost' type="text">
              </div>
            </div>
            <div class="control-group">
              <label>Port</label>
              <div class="controls">
                <input name=url id='connect_port' value='61623' type="text">
              </div>
            </div>
            <div class="control-group">
              <label>Client ID</label>
              <div class="controls">
                <input id='connect_clientId' placeholder="id" value="example" type="text">
              </div>
            </div>
            <div class="control-group">
              <label>User ID</label>
              <div class="controls">
                <input id='connect_user' placeholder="User ID" value="admin" type="text">
              </div>
            </div>
            <div class="control-group">
              <label>Password</label>
              <div class="controls">
                <input id='connect_password' placeholder="User Password" value="password"
                       type="password">
              </div>
            </div>
            <div class="control-group">
              <label>Destination</label>
              <div class="controls">
                <input id='destination' placeholder="Destination" value="chat/general" type="text">
              </div>
            </div>
            <div class="form-actions">
              <button id='connect_submit' type="submit" class="btn btn-large btn-primary">Connect
              </button>
            </div>
          </fieldset>
        </form>
      </div>
      <div id="connected" style="display:none">
        <div class="page-header">
          <h2>Chat Room</h2>
        </div>
        <div id="messages">
        </div>
        <form class="well form-search" id='send_form'>
          <button class="btn" type="button" id='disconnect' style="float:right">Disconnect</button>
          <input class="input-medium" id='send_form_input' placeholder="Type your message here"
                 class="span6"/>
          <button class="btn" type="submit">Send</button>
        </form>
      </div>
    </div>
    <div class="span4">
      <div class="page-header">
        <h2>Debug Log</h2>
      </div>
      <pre id="debug"></pre>
    </div>
  </div>
</div>

<!-- Scripts placed at the end of the document so the pages load faster -->
<script src='js/jquery-1.7.2.min.js'></script>
<script src="js/mqttws31.js"></script>
<script>//<![CDATA[
$(document).ready(function () {

  $("#connect_clientId").val("example-" + (Math.floor(Math.random() * 100000)));
  if (!window.WebSocket) {
    $("#connect").html("\
        <h1>Get a new Web Browser!</h1>\
        <p>\
        Your browser does not support WebSockets. This example will not work properly.<br>\
        Please use a Web Browser with WebSockets support (WebKit or Google Chrome).\
        </p>\
    ");
  } else {

    var client, destination;

    $('#connect_form').submit(function () {
      var host = $("#connect_host").val();
      var port = $("#connect_port").val();
      var clientId = $("#connect_clientId").val();
      var user = $("#connect_user").val();
      var password = $("#connect_password").val();

      destination = $("#destination").val();

      client = new Messaging.Client(host, Number(port), clientId);

      client.onConnect = onConnect;

      client.onMessageArrived = onMessageArrived;
      client.onConnectionLost = onConnectionLost;

      client.connect({
        userName: user,
        password: password,
        onSuccess: onConnect,
        onFailure: onFailure
      });
      return false;
    });

    // the client is notified when it is connected to the server.
    var onConnect = function (frame) {
      debug("connected to MQTT");
      $('#connect').fadeOut({duration: 'fast'});
      $('#connected').fadeIn();
      client.subscribe(destination);
    };

    // this allows to display debug logs directly on the web page
    var debug = function (str) {
      $("#debug").append(document.createTextNode(str + "\n"));
    };

    $('#disconnect').click(function () {
      client.disconnect();
      $('#connected').fadeOut({duration: 'fast'});
      $('#connect').fadeIn();
      $("#messages").html("")
      return false;
    });

    $('#send_form').submit(function () {
      var text = $('#send_form_input').val();
      if (text) {
        message = new Messaging.Message(text);
        message.destinationName = destination;
        client.send(message);
        $('#send_form_input').val("");
      }
      return false;
    });

    function onFailure(failure) {
      debug("failure");
      debug(failure.errorMessage);
    }

    function onMessageArrived(message) {
      var p = document.createElement("p");
      var t = document.createTextNode(message.payloadString);
      p.appendChild(t);
      $("#messages").append(p);
    }

    function onConnectionLost(responseObject) {
      if (responseObject.errorCode !== 0) {
        debug(client.clientId + ": " + responseObject.errorCode + "\n");
      }
    }

  }
});
//]]></script>

</body>
</html>
